Display devices

ABSTRACT

A display device comprises a display substrate, first interconnections, second interconnections, a driving circuit and a polarizing plate. The display substrate includes a bend portion which is curved with respect to an axis parallel to a first direction. The first interconnections extend in the first direction and are on the display substrate. The second interconnections are on the display substrate, connected to the first interconnections and extend in a second direction different from the first direction. The driving circuit is electrically connected to the first interconnections and the second interconnections and provides driving signals to the first interconnections and thesecond interconnections. The polarizing plate is on the display substrate and overlaps the first interconnections and the second interconnections.

This application claims priority to Korean Patent Application No.10-2013-0150134, filed on Dec. 4, 2013, and all the benefits accruingtherefrom under 35 U.S.C. §119, the disclosure of which is herebyincorporated by reference in its entirety.

BACKGROUND

(1) Field

The invention relates to display devices and, more particularly, todisplay devices capable of reducing an occurrence of cracks ininterconnections thereof.

(2) Description of the Related Art

Display devices include a liquid crystal display device, anelectrowetting display device, and an electrophoretic display device,etc. A display device may include pixels and interconnections havingdata lines and gate lines. The pixels and the interconnections areprovided in a display panel of the display device. The pixels may bealternately connected to the data lines adjacent to the pixels forinversion driving of the display device.

Display devices have been developed to have curved portions. However, inthe event that the display devices have the curved portions,interconnections on the curved portions receive tension. Thus, cracksmay occur in the interconnections disposed on the curved portions, sothat improved display devices and methods thereof capable of reducing anoccurrence of cracks in the interconnections are desired.

SUMMARY

One or more exemplary embodiment of the invention provides displaydevices capable of reducing an occurrence of cracks in interconnectionsthereof.

An exemplary embodiment of the invention provides a display deviceincluding a display substrate, first interconnections, secondinterconnections, a driving circuit and a polarizing plate. The displaysubstrate includes a bend portion which is curved with respect to anaxis parallel to a first direction. The first interconnections extend inthe first direction and are on the display substrate. The secondinterconnections are connected to the first interconnections and extendin a second direction different from the first direction. The secondinterconnections are on the display substrate. The driving circuit iselectrically connected to the first interconnections and the secondinterconnections and provides driving signals to the firstinterconnections and the second interconnections. The polarizing plateis on the display substrate. The polarizing plate overlaps the firstinterconnections and the second interconnections.

The display substrate may further include a non-bend portion which isnot curved with respect to the axis parallel to the first direction.

The first interconnections may include first bend interconnections onthe bend portion, and first non-bend interconnections on the non-bendportion.

The second interconnections may include second bend interconnectionsconnected to the first bend interconnections, and second non-bendinterconnections connected to the first non-bend interconnections.

The second bend interconnections may include third interconnections onthe non-bend portion and connected to the driving circuit, and fourthinterconnections on the bend portion and connected to the thirdinterconnections and the first bend interconnections.

The polarizing plate may include a quadrilateral region, and aprotrusion region protruding from a side of the quadrilateral region.The quadrilateral region may overlap the first bend interconnections,and the protrusion region may overlap the fourth interconnections. Theprotrusion region may have a triangular shape, a quadrilateral shape, apolygonal shape, a circular shape, a semicircular shape or an ellipticalshape.

The protrusion region may include a first protrusion protruding from theside of the quadrilateral region at a first end portion thereof, and asecond protrusion protruding from the side of the quadrilateral regionat a second end portion thereof. The first protrusion and the secondprotrusion may have the same shape or different shapes from each other.The first and second protrusions may overlap the fourthinterconnections.

The first and second interconnections may be data lines, the drivingsignals may include data signals, and the driving circuit part mayinclude a data driver which provides the data signals to the data lines.

The display device may further include gate lines insulated from thedata lines, and a gate driver which provides gate signals to the gatelines.

The driving circuit may include a base film, and a driving circuit chipmounted on the base film. The base film may be flexible.

The display substrate may include a plurality of bend portions.

The display device may further include a lower protection film on thedisplay substrate and opposite to the polarizing plate with respect tothe display substrate. The lower protection film may have the same shapeas the display substrate.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and advantages of the invention will becomemore apparent in view of the attached drawings and accompanying detaileddescription, in which:

FIG. 1 is a perspective view illustrating an exemplary embodiment of adisplay device according to the invention;

FIG. 2 is a cross-sectional view taken along line I-I′ of FIG. 1;

FIG. 3(A) to FIG. 3(E) are diagrams illustrating exemplary embodimentsof shapes of a protrusion region of a display device according to theinvention;

FIG. 4 is a perspective view illustrating another exemplary embodimentof a display device according to the invention; and

FIG. 5 is a perspective view illustrating still another exemplaryembodiment of a display device according to the invention.

DETAILED DESCRIPTION

The invention will now be described more fully hereinafter withreference to the accompanying drawings, in which exemplary embodimentsof the invention are shown. The advantages and features of the inventionand methods of achieving them will be apparent from the followingexemplary embodiments that will be described in more detail withreference to the accompanying drawings. It should be noted, however,that the invention are not limited to the following exemplaryembodiments, and may be implemented in various forms. Accordingly, theexemplary embodiments are provided only to disclose the invention andlet those skilled in the art know the category of the invention. In thedrawings, exemplary embodiments of the invention are not limited to thespecific examples provided herein and are exaggerated for clarity.

The terminology used herein is for the purpose of describing particularexemplary embodiments only and is not intended to limit the invention.As used herein, the singular terms “a,” “an” and “the” are intended tocomprise the plural forms as well, unless the context clearly indicatesotherwise. It will be further understood that the terms “comprises”,“comprising,”, “includes” and/or “including”, when used herein, specifythe presence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof. As used herein, the term “and/or”comprises any and all combinations of one or more of the associatedlisted items.

It will be understood that when an element is referred to as being“connected” or “coupled” to another element, it may be directlyconnected or coupled to the other element or intervening elements may bepresent. Similarly, it will be understood that when an element such as alayer, region or substrate is referred to as being “on” another element,it can be directly on the other element or intervening elements may bepresent. In contrast, the term “directly” means that there are nointervening elements. As used herein, connected may refer to elementsbeing physically and/electrically connected to each other.

Additionally, the embodiment in the detailed description will bedescribed with sectional views as ideal exemplary views of theinvention. Accordingly, shapes of the exemplary views may be modifiedaccording to manufacturing techniques and/or allowable errors.Therefore, the exemplary embodiments of the invention are not limited tothe specific shape illustrated in the exemplary views, but may includeother shapes that may be created according to manufacturing processes.Areas exemplified in the drawings have general properties, and are usedto illustrate specific shapes of elements. Thus, this should not beconstrued as limited to the scope of the invention.

It will be also understood that although the terms first, second, thirdetc. may be used herein to describe various elements, these elementsshould not be limited by these terms. These terms are only used todistinguish one element from another element. Thus, a first element insome exemplary embodiments could be termed a second element in otherexemplary embodiments without departing from the teachings of thepresent invention. Exemplary embodiments of the invention explained andillustrated herein include their complementary counterparts. The samereference numerals or the same reference designators denote the sameelements throughout the specification.

Spatially relative terms, such as “lower,” “under,” “above,” “upper” andthe like, may be used herein for ease of description to describe therelationship of one element or feature to another element(s) orfeature(s) as illustrated in the figures. It will be understood that thespatially relative terms are intended to encompass differentorientations of the device in use or operation, in addition to theorientation depicted in the figures. For example, if the device in thefigures is turned over, elements described as “under” relative to otherelements or features would then be oriented “above” relative to theother elements or features. Thus, the exemplary term “under” canencompass both an orientation of above and below. The device may beotherwise oriented (rotated 90 degrees or at other orientations) and thespatially relative descriptors used herein interpreted accordingly.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this invention belongs. It will befurther understood that terms, such as those defined in commonly useddictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art andwill not be interpreted in an idealized or overly formal sense unlessexpressly so defined herein.

Exemplary embodiments of a display device according to the inventionwill be described hereinafter.

FIG. 1 is a perspective view illustrating an exemplary embodiment of adisplay device according to the invention.

Referring to FIG. 1, a display device 10 includes a display substrate100, first interconnections 110, second interconnections 140, a drivingcircuit part 300 (otherwise referred to as a driver) and a polarizingplate 200.

The display device 10 may be flexible. In an exemplary embodiment, forexample, the display device 10 may be one selected from, but not limitedto, a flexible liquid crystal display device, a flexible organic lightemitting display device, a flexible electrophoretic display device and aflexible electrowetting display device. The display device 10 of theorganic light emitting display device will be described as an example indetail. However, the invention is not limited thereto.

Even though not shown in FIG. 1, the display substrate 100 may include alower substrate, and a thin film transistor substrate disposed on thelower substrate. The lower substrate may be, but not limited to, a glasssubstrate, a quartz substrate or a plastic substrate. The thin filmtransistor substrate may be disposed on the lower substrate and mayinclude a thin film transistor and an anode. The thin film transistorand the anode may be used in order to apply an electric field to anorganic light emitting layer.

Additionally, even though not shown in FIG. 1, the display substrate 100may further include the organic light emitting layer and an uppersubstrate. The organic light emitting layer is disposed between the thinfilm transistor substrate and the upper substrate. The upper substratemay be, but not limited to, a glass substrate, a quartz substrate or aplastic substrate. Light may be emitted from the organic light emittinglayer by an electric field generated between the anode disposed on thethin film transistor substrate and a cathode disposed on the uppersubstrate.

The display substrate 100 includes a bend portion 1000 curved withrespect to an axis parallel to a first direction DR1 of FIG. 1. A shapeor cross-sectional profile of the bend portion 1000 may be, but notlimited to, a polygonal shape (e.g., a triangle-shape or aquadrangle-shape) or a shape having curvature (e.g., a circular shape,an elliptical shape or a semicircular shape). The first direction DR1 isillustrated parallel to a short side of the display substrate 100, butthe invention is not limited thereto.

The bend portion 1000 may include a portion of a display region (notshown) in which an image is displayed, or an entire portion of the bendportion 1000 may be a non-display region (not shown) in which an imageis not displayed.

The display substrate 100 may further include a non-bend portion 2000that is not deformed but is substantially flat or planar. The non-bendportion 2000 may include the display region (not shown) in which theimage is displayed.

The display device 10 includes the first interconnections 110 and thesecond interconnections 140. The first interconnections 110 and thesecond interconnections 140 are disposed on the display substrate 100.The first interconnections 110 extend in the first direction DR1, andthe second interconnections 140 extend in a second direction differentfrom the first direction DR1. Extending directions of the secondinterconnections 140 are defined as the second direction for the purposeof ease and convenience in explanation. However, the extendingdirections of the second interconnections 140 are not necessarilyparallel to each other, under the condition that the extendingdirections of the second interconnections 140 are different from thefirst direction DR1. In other words, the second interconnections 140 mayextend in the same direction or may extend in different directions fromeach other, under the condition that the extending directions of thesecond interconnections 140 are different from the first direction DR1.

Additionally, the first interconnections 110 are connected to the secondinterconnections 140, and the first and second interconnections 110 and140 receive driving signals from the driving circuit part 300.

A portion of the first interconnections 110 and a portion of the secondinterconnections 140 may be disposed on the bend portion 1000.

The first interconnections 110 include first bend interconnections 130disposed on the bend portion 1000 and first non-bend interconnections120 disposed on the non-bend portion 2000.

The second interconnections 140 include second bend interconnections 160connected to the first bend interconnections 130 and second non-bendinterconnections 150 connected to the first non-bend interconnections120. Portions of the second bend interconnections 160 may be disposed onthe bend portion 1000, and remaining portions of the second bendinterconnections 160 may be disposed on the non-bend portion 2000. Thesecond bend interconnections 160 include third interconnections 161 andfourth interconnections 163. The third interconnections 161 are disposedon the non-bend portion 2000 and are connected to the driving circuitpart 300. The fourth interconnections 163 are disposed on the bendportion 1000 and are connected to the third interconnections 161 and thefirst bend interconnections 130.

The display device 10 includes the polarizing plate 200. The polarizingplate 200 is disposed on the display substrate 100 and covers a portionof the first interconnections 110 and a portion of the secondinterconnections 140.

The polarizing plate 200 may include a quadrilateral region 210, and aprotrusion region 230 protruding from a side of the quadrilateral region210. The quadrilateral region 210 may be disposed on the bend portion1000 and not on the non-bend portion 200, or may be disposed on the bendportion 1000 and the non-bend portion 2000.

The quadrilateral region 210 may cover a portion of the firstinterconnections 110 disposed on the bend portion 1000 and may alsocover a portion of the second interconnections 140 connected to thefirst interconnections 110.

A portion of the protrusion region 230 covers the fourthinterconnections 163.

FIG. 2 is a cross-sectional view taken along line I-I′ of FIG. 1.

The bend portion 1000 is deformed with respect to the axis parallel tothe first direction DR1. Thus, the fourth interconnections 163 receivetension generated by the bend portion 1000 such that cracks may occur inthe fourth interconnections 163. Referring to FIG. 2, the polarizingplate 200 covers the fourth interconnections 163 in the display device10, so that the fourth interconnections 163 may be disposed in a neutralplane when viewed from a cross-sectional view. Since the fourthinterconnections 163 are disposed in the neutral plane, the tensiongenerated by the bend portion 1000 may be reduced. Thus, it is possibleto reduce occurrence of the cracks of the fourth interconnections 163.

FIG. 3 is a diagram illustrating exemplary embodiments of shapes of aprotrusion region of a display device according to the invention. Theprotrusion region 230 of the polarizing plate 200 has a shape thatcovers the fourth interconnections 163 such that the fourthinterconnections 163 are disposed in the neutral plane when viewed froma cross-sectional view. Referring to FIG. 3(A) to FIG. 3(E), a planar ortop plan view of the shape of the protrusion region 230 of thepolarizing plate 200 may be selected from, but not limited to, atriangular shape (FIG. 3A), a quadrilateral shape (FIG. 3B), a polygonalshape (FIG. 3C), a circular shape (FIG. 3D), a semicircular shape, andan elliptical shape (FIG. 3E).

Referring again to FIG. 1, the driving circuit part 300 may beelectrically connected to the first interconnections 110 and the secondinterconnections 140 and may provide the driving signals to the firstinterconnections 110 and the second interconnections 140.

In an exemplary embodiment, the first interconnections 110 and thesecond interconnections 140 may be data lines, and the driving signalsmay include data signals. The driving circuit part 300 may include adata driver (not shown) providing the data signals to the data lines.

The display device 10 may further include gate lines GL insulated fromthe data lines, and a gate driver 400 providing gate signals to the gatelines GL. The gate driver 400 may be disposed on the display substrate100 or the driving circuit part 300 may include the gate driver 400therein.

Referring to FIG. 1, the driving circuit part 300 may include a basefilm 310, and a driving circuit chip 330 mounted on the base film 310.The base film 310 may be flexible.

The display device 10 may further include a lower protection film 500disposed under the display substrate 100. The lower protection film 500may have the same shape as the display substrate 100, in the top planand/or cross-sectional view. The lower protection film 500 may includean organic material and/or an inorganic material.

The display device 10 may further include an upper protection film (notshown) disposed on the polarizing plate 200. The upper protection filmmay have the same shape as the polarizing plate 200 and/or the displaysubstrate 100, such as in the top plan and/or cross-sectional view. Theupper protection film may include an organic material and/or aninorganic material.

In the display device 10 according to the illustrated exemplaryembodiment, the polarizing plate 200 covers the fourth interconnections163 such that the fourth interconnections 163 are disposed in theneutral plane in a cross-sectional view. Thus, when the display device10 is bent, the tension applied to the fourth interconnections 163 maybe reduced. As a result, reduction of cracks that may occur in thefourth interconnections 163 is possible.

Next, another exemplary embodiment of a display device according to theinvention will be described. Hereinafter, differences between theexemplary embodiments of the display devices will be mainly described indetail, and the same descriptions will be omitted or mentioned brieflyfor the purpose of ease and convenience in explanation.

FIG. 4 is a perspective view illustrating another exemplary embodimentof a display device 20 according to the invention.

Referring to FIG. 4, the display device 20 includes a display substrate100, first interconnections 110, second interconnections 140, a drivingcircuit part 300 and a polarizing plate 200.

The polarizing plate 200 may include a quadrilateral region 210, and aprotrusion region 230 protruding from a side of the quadrilateral region210. The quadrilateral region 210 may be disposed on the bend portion1000 and not on the non-bend portion 2000, or may be disposed on thebend portion 1000 and the non-bend portion 2000.

The polarizing plate 200 is disposed on the display substrate 100 andcovers a portion of the first interconnections 110 and a portion of thesecond interconnections 140.

The protrusion region 230 of the polarizing plate 200 may include afirst protrusion 231 protruding at a first end portion of the side ofthe quadrilateral region 210, and a second protrusion 233 protruding ata second end portion of the side of the quadrilateral region 210.

A portion of the second protrusion 233 may cover the fourthinterconnections 163, while a portion of the first protrusion 231 maycover the second non-bend interconnections 150 connected to the firstnon-bend interconnections 120.

As mentioned above, the protruding region 230 in the bend portion 1000has shapes that cover the fourth interconnections 163 to locate thefourth interconnections 163 in the neutral plane when viewed from across-sectional view. The illustrated exemplary embodiment includes aprotrusion in both the bend and non-bend portions 1000 and 2000. Incontrast, the exemplary embodiment in FIG. 1 includes a protrusion inonly the bend portion 1000, but the invention is not limited thereto.

The shapes of the first and second protrusions 231 and 233 may beselected from, but not limited to, a triangular shape, a quadrilateralshape, a polygonal shape, a circular shape, a semicircular shape and anelliptical shape. The first protrusion 231 and the second protrusion 233of the polarizing plate 200 may have the same shape or may havedifferent shapes from each other.

In the display device 20 according to the illustrated exemplaryembodiment, the polarizing plate 200 covers the fourth interconnections163 such that the fourth interconnections 163 are disposed in theneutral plane in a cross-sectional view. Thus, the tension applied tothe fourth interconnections 163 may be reduced when the display device10 is bent. As a result, reduction of cracks that may occur in thefourth interconnections 163 is possible.

Next, still another exemplary embodiment of a display device accordingto the invention will be described. Hereinafter, differences betweenexemplary embodiments will be mainly described in detail, and the samedescriptions will be omitted or mentioned briefly for the purpose ofease and convenience in explanation.

FIG. 5 is a perspective view illustrating still another exemplaryembodiment of a display device 30 according to the invention.

Referring to FIG. 5, the display device 30 includes a display substrate100, first interconnections 110, second interconnections 140, a drivingcircuit part 300 and a polarizing plate 200. The display device 30includes a plurality of bend portions 1000.

The polarizing plate 200 may include a quadrilateral region 210, and aprotrusion region 230 protruding from a side of the quadrilateral region210. The quadrilateral region 210 may be disposed on the bend portion1000 and not on the non-bend portion 2000, or may be disposed on thebend portion 1000 and the non-bend portion 2000.

FIG. 5 shows the first interconnections 110 disposed on the bend portion1000 as the first bend interconnections 130. However, the invention isnot limited thereto. In other exemplary embodiments, the firstinterconnections 110 may also be disposed on the non-bend portion 2000,as the first non-bend interconnections 120, as shown in FIG. 1.Similarly, FIG. 5 shows the second interconnections 140 disposed on thebend portion 1000 as the second bend interconnections 163. However, theinvention is not limited thereto. In other exemplary embodiments, thesecond interconnections 140 may also be disposed on the non-bend portion2000, as the second non-bend interconnections 150, as shown in FIG. 1.

The polarizing plate 200 is disposed on the display substrate 100 andcovers a portion of the first interconnections 110 and a portion of thesecond interconnections 140.

The protrusion region 230 of the polarizing plate 200 may include afirst protrusion 231 protruding at a first end portion of the side ofthe quadrilateral region 210, and a second protrusion 233 protruding ata second end portion of the side of the quadrilateral region 210. Thatis, the protrusions of the polarizing plate 200 are disposed at eachbend portion 1000, but the invention is not limited thereto.

In the display device 30 according to the illustrated exemplaryembodiment, the polarizing plate 200 covers the fourth interconnections163 such that the fourth interconnections 163 are disposed in theneutral plane in a cross-sectional view. Thus, the tension applied tothe fourth interconnections 163 may be reduced when the display device10 is bent. As a result, reduction of cracks that may occur in thefourth interconnections 163 is possible.

According to one or more exemplary embodiment of the invention,occurrence of cracks of the interconnections at a bend portion may bereduced or minimized

While the invention has been described with reference to exemplaryembodiments, it will be apparent to those skilled in the art thatvarious changes and modifications may be made without departing from thespirit and scope of the invention. Therefore, it should be understoodthat the above exemplary embodiments are not limiting, but illustrative.Thus, the scope of the invention is to be determined by the broadestpermissible interpretation of the following claims and theirequivalents, and shall not be restricted or limited by the foregoingdescription.

What is claimed is:
 1. A display device comprising: a display substratecomprising: a bend portion which is curved with respect to an axisparallel to a first direction, and a non-bend portion which is notcurved with respect to the axis parallel to the first direction; a firstinterconnection on the display substrate and extending in the firstdirection; a second interconnection on the display substrate, whereinthe second interconnection is connected to the first interconnection,and is extended in a second direction different from the firstdirection; a driving circuit connected to the second interconnection;and a polarizing plate comprising a main region which is on the bendportion and the non-bend portion and a protrusion region which protrudesfrom a side of the main region in the first direction, wherein theprotrusion region overlaps a portion of the second interconnection. 2.The display device of claim 1, wherein the first interconnectioncomprises: a first bend interconnection on the bend portion; and a firstnon-bend interconnection on the non-bend portion.
 3. The display deviceof claim 2, wherein the second interconnection comprise: a second bendinterconnection connected to the first bend interconnection; and asecond non-bend interconnection connected to the first non-bendinterconnection.
 4. The display device of claim 3, wherein the secondbend interconnection comprise: a third interconnection on the non-bendportion and connected to the driving circuit; and a fourthinterconnection on the bend portion, and connected between the thirdinterconnection and the first bend interconnection.
 5. The displaydevice of claim 4, wherein the main region overlaps the first bendinterconnection, and the protrusion region overlaps the fourthinterconnection.
 6. The display device of claim 4, wherein theprotrusion region comprises: a first protrusion protruding from the sideof the main region, at a first end portion of the side of the mainregion; and a second protrusion protruding from the side of the mainregion, at a second end portion of the side of the main region oppositeto the first end portion, wherein the first and second protrusionsoverlap the fourth interconnection.
 7. The display device of claim 1,wherein the protrusion region overlaps the second interconnection in thebend portion.
 8. The display device of claim 1, wherein the protrusionregion has a triangular shape, a quadrilateral shape, a polygonal shape,a circular shape, a semicircular shape or an elliptical shape, in a topplan view.
 9. The display device of claim 1, wherein the protrusionregion comprises: a first protrusion protruding from the side of themain region, at a first end portion of the side of the main region; anda second protrusion protruding from the side of the main region, at asecond end portion of the side of the main region opposite to the firstend portion.
 10. The display device of claim 9, wherein the firstprotrusion and the second protrusion have the same shape as each other.11. The display device of claim 9, wherein the first protrusion and thesecond protrusion have different shapes from each other.
 12. The displaydevice of claim 1, wherein the first and second interconnection are datalines, and the driving circuit comprises a data driver which providesdata signals to the data lines.
 13. The display device of claim 12,further comprising: gate lines insulated from the data lines; and a gatedriver which provides gate signals to the gate lines.
 14. The displaydevice of claim 1, wherein the driving circuit comprises: a base film;and a driving circuit chip mounted on the base film.
 15. The displaydevice of claim 14, wherein the base film is flexible.
 16. The displaydevice of claim 1, wherein the display substrate further comprises aplurality of bend portions.
 17. The display device of claim 1, furthercomprising: a lower protection film on the display substrate andopposite to the polarizing plate with respect to the display substrate,wherein the lower protection film has a same shape as the displaysubstrate.
 18. A method of manufacturing a display device, comprising:providing a display substrate comprising: a bend portion which is curvedwith respect to an axis parallel to a first direction, and a non-bendportion which is not curved with respect to the axis parallel to thefirst direction and extended from the bend portion; disposing a firstsignal line interconnection on the display substrate and extending inthe first direction; disposing a second signal line interconnection onthe display substrate, the second signal line interconnection isconnected to the first signal line interconnection and extends in asecond direction different from the first direction; providing a drivingcircuit which is connected to the second signal line interconnection;and providing a polarizing plate which is on the display substrate,wherein the polarizing plate comprising a main region which is on thebend portion and the non-bend portion and a protrusion region whichprotrudes from a side of the main region in the first direction; andwherein the protrusion region overlaps a portion of the second signalline interconnection which is between the display substrate and theprotrusion region.
 19. A display device comprising: a display substratecomprising a bend portion which is curved with respect to an axisparallel to a first direction and a non-bend portion which is not curvedwith respect to the axis parallel to the first direction; a firstinterconnection comprising a first bend interconnection on the bendportion and a first non-bend interconnection on the non-bend portion andextending in the first direction; a second interconnection comprising asecond bend interconnection connected to the first bend interconnectionand a second non-bend interconnection connected to the first non-bendinterconnection and extending from the first interconnection in a seconddirection different from the first direction; and a polarizing plate onthe display substrate, wherein the second bend interconnection comprisea third interconnection on the non-bend portion and connected to adriving circuit and a fourth interconnection on the bend portion, andconnected between the third interconnection and the first bendinterconnection, and wherein the polarizing plate overlaps the firstbend interconnection and the fourth interconnection, and wherein thepolarizing plate comprises; a quadrilateral region disposed on the bendportion and the non-bend portion, and a protrusion region protrudingfrom a side of the quadrilateral region.
 20. The display device of claim19, wherein the polarizing plate further overlaps the thirdinterconnection.
 21. The display device of claim 19, wherein thequadrilateral region overlaps the first bend interconnection, and theprotrusion region overlaps the fourth interconnection.
 22. The displaydevice of claim 21, wherein the protrusion region further overlaps thethird interconnection.
 23. The display device of claim 21, wherein thequadrilateral region further overlaps the first non-bendinterconnection.
 24. A display device comprising: a display substratecomprising a bend portion which is curved with respect to an axisparallel to a first direction and a non-bend portion which is not curvedwith respect to the axis parallel to the first direction; and apolarizing plate disposed on the display substrate, wherein thepolarizing plate defines: a quadrilateral region disposed on the bendportion and the non-bend portion of the display substrate; and aprotrusion region protruded from a part of a side of the quadrilateralregion .
 25. The display device of claim 24, wherein the protrusionregion is disposed on the bend portion.
 26. The display device of claim24, wherein the protrusion region is disposed on the bend portion andthe non-bend portion.